This site is intended to be a master index of all the lighthouses in the Americas (North and South). It now includes portions of Europe as well. For an index of "all the Lights of the World", I recommend The Lighthouse Directory.

The unique focus (as opposed to some of those listed in the References) is the intentional focus on maps (via Google's API). This was designed with the intention to help people (like your webmaster) who wish to see multiple lights plan a trip.